Flatfile Destination Expression Problems

May 11, 2007

Hi:

Am trying to write SQL data to multiple flat files.

I use a For Each loop,

store field Values in variables

construct a fileName(variable as expression) for each row,

then create a text file for each row in resultset, (Filesystem task)

and then try to fill each file from a SQL Source to a Flatfile Destination.

Destination.connectionString=Filename.



Works ok for creation of Text Files, so I know my fileName variable is getting evaluated for each iteration.

But the flat file connection manager is stuck and evaluates to the static part of my expression.



What am I doing wrong?

TIA

Kar

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Why does the raw file have an option for a variable path and the flat file destination does not? Not having this feature makes it impossible to work with variable environments. Please add this option to the Flatfile Destination.

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Jan 24, 2007

Hello, I wanted to do the following.

Copy a full directory from source to destination (Done)

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So I created a foreach loop, and created a varriable aclled CURRENTFILENAME, and assigned it into the foreachloop to index 0.



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Any ideas please



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Hi,

I am new to SSIS programming and trying to export data from a flatfile source to SQL server destination table dynamically. I need to get the table schema info (column length, data type etc.) from SQL server table and then map the source columns from flatfile to destination table columns.

I am referring to one of the programming samples from Microsoft and another excellent article by Moim Hossain. Can someone help me understand how to map the Source columns to destination table columns depending on table schema? Please help.


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Error 3 Error loading MLS_AZ_PHX.dtsx: The result of the expression ""C:\sql_working_directory\MLS\AZ\Phoenix\Docs\Armls_Schema Updated 020107.xls"" on property "ConnectionString" cannot be written to the property. The expression was evaluated, but cannot be set on the property. c:documents and settingsviewmastermy documentsvisual studio 2005projectsm l sMLS_AZ_PHX.dtsx 1 1


"C:\sql_working_directory\MLS\AZ\Phoenix\Docs\Armls_Schema Updated 020107.xls"

Directly using C:sql_working_directoryMLSAZPhoenixDocsArmls_Schema Updated 020107.xls
as connectionString works

However - I'm trying to deploy the package - and trying to use expression:
@[User::DIR_WORKING] + "\Docs\Armls_Schema Updated 020107.xls"
which causes the same error to occur

(Same error with other Excel source also:
Error 5 Error loading MLS_AZ_PHX.dtsx: The result of the expression "@[User::DIR_WORKING] + "\Docs\Armls_SchoolCodesJuly06.xls"" on property "ConnectionString" cannot be written to the property. The expression was evaluated, but cannot be set on the property. c:documents and settingsviewmastermy documentsvisual studio 2005projectsm l sMLS_AZ_PHX.dtsx 1 1
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This is the lookup expression that I added for the 2nd column.

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I'm looking forward to an early answer.

Regards

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The CreatePackage sample provided with SQL Server programmatically creates a package that has a source type of OLEDB to a flat file destination. I am building exactly the opposite, source=flatfile, destination=SQL Server. I expect that will be a more common scenario is using SSIS.

The problem I have is populating the source columns in the FlatFileSource connection manager programmatically. I know it can be done because it happens when you build a package in Visual Studio. What I'd like to know is how to do it programmatically in the object model. How can I interrogate the datasource through the connection manager to find out what columns it has? If I know, I can add the columns to the connection manager. My sample below does this, but it doesn't know the number of columns in the source so that value is hardcoded. I'm guessing there is a better way to do this than what I've got below.

How can I find the number of columns in my source so I can add the columns to the connection manager?

Thanks.



Private Sub AddColumnsToFlatFileConnectionManager()
Dim ff As wrap.IDTSConnectionManagerFlatFile90 = Nothing

For Each cm As ConnectionManager In _Package.Connections
If cm.Name.Equals(_ExternalConnectionID) Then
ff = TryCast(cm.InnerObject, wrap.IDTSConnectionManagerFlatFile90)
DtsConvert.ToConnectionManager90(cm)
End If
Next

If Not ff Is Nothing Then

Dim col As wrap.IDTSConnectionManagerFlatFileColumn90
Dim name As wrap.IDTSName90
Dim Min As Int32 = 0
Dim Max As Int32 = Min + 3 ' *** HARDCODED LIMIT ***

For cols As Integer = Min To Max
col = ff.Columns.Add()

If cols = Max Then
col.ColumnDelimiter = vbCrLf
Else
col.ColumnDelimiter = ","
End If

Dim width As Int32 = 50
Dim DataType As wrap.DataType = wrap.DataType.DT_STR

col.ColumnType = "Delimited"
col.DataType = DataType
col.MaximumWidth = width
col.DataPrecision = 0
col.DataScale = 0
col.ColumnWidth = width
name = TryCast(col, wrap.IDTSName90)
name.Name = "Column " & cols.ToString

Next

End If

End Sub

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"Mani"
"Raghu"

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Thanks,
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i don't think it's practical to have flat files for each lookups. how is this normally done? please help...



thanks!

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Jan 3, 2007

This seems so obvious, but is causing me a lot of trouble:

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With the extra line:

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"M","MFH","Multifamily Mortgage Loans","Multi-Fam Mtg"

"R","MIX","Mixed/Various/Unknown","Mixed/Various"

Without the extra line:

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"M","MFH","Multifamily Mortgage Loans","Multi-Fam Mtg"
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Seems to me it should be possible to set up a single FlatFile connection to handle both these formats, but it's not easy.

I can easily manually edit the FlatFile connection and change the "RowDelimiter" to either "{CR}{LF}" or "{CR}{LF}{CR}{LF}" and the package runs against the corresponding flat file.

However, when I try to use an expression (@[User::StrRowDelimiter]) to set the RowDelimiter to the value of a package variable, the expression is completely ignored.

I can only change the RowDelimiter property on the FlatFile connection by manually opening the editor on the connection and changing it to match the incoming file.

Why isn't this connection seeing the expression I've set up for its RowDelimiter property?

Thanks for any help!



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Hello Folks,

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Code Snippet

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Example 1:
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hi all,



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